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Test Code FACTB C3 Proactivator (Factor B)

Collection Container

Serum gel

Specimen Required

Serum

Other Acceptable Specimen Types

Red top

Specimen Volume

1 mL

Minimum Specimen Volume

0.5 mL

Special Handling Instructions

Separate serum within 2 hours.

Transport Temperature

Frozen

Specimen Stability

30 days

Methodology

Nephelometry

Reference Ranges

23-67 mg/dL

Additional Information

Also called Properdin Factor B

CPT Code

83883

LOINC Code

2269-9

Units of Measure

mg/dL